Enjoy 3.2 release ^_^

src/main/java/com/jfinal/template/expr/ast/StaticMethod.java

@@ -0,0 +1,85 @@
+/**
+ * Copyright (c) 2011-2017, James Zhan 詹波 (jfinal@126.com).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.jfinal.template.expr.ast;
+
+import com.jfinal.template.TemplateException;
+import com.jfinal.template.stat.Location;
+import com.jfinal.template.stat.ParseException;
+import com.jfinal.template.stat.Scope;
+
+/**
+ * StaticMethod : ID_list : '::' ID '(' exprList? ')'
+ * 用法： com.jfinal.kit.Str::isBlank("abc")
+ */
+public class StaticMethod extends Expr {
+	
+	private Class<?> clazz;
+	private String methodName;
+	private ExprList exprList;
+	
+	public StaticMethod(String className, String methodName, Location location) {
+		init(className, methodName, ExprList.NULL_EXPR_LIST, location);
+	}
+	
+	public StaticMethod(String className, String methodName, ExprList exprList, Location location) {
+		if (exprList == null || exprList.length() == 0) {
+			throw new ParseException("exprList can not be blank", location);
+		}
+		init(className, methodName, exprList, location);
+	}
+	
+	private void init(String className, String methodName, ExprList exprList, Location location) {
+		try {
+			this.clazz = Class.forName(className);
+		} catch (ClassNotFoundException e) {
+			throw new ParseException("Class not found: " + className, location, e);
+		} catch (Exception e) {
+			throw new ParseException(e.getMessage(), location, e);
+		}
+		this.methodName = methodName;
+		this.exprList = exprList;
+		this.location = location;
+	}
+	
+	public Object eval(Scope scope) {
+		Object[] argValues = exprList.evalExprList(scope);
+		MethodInfo methodInfo;
+		try {
+			methodInfo = MethodKit.getMethod(clazz, methodName, argValues);
+		} catch (Exception e) {
+			throw new TemplateException(e.getMessage(), location, e);
+		}
+		
+		// StaticMethod 是固定的存在，不支持 null safe，null safe 只支持具有动态特征的用法
+		if (methodInfo == null) {
+			throw new TemplateException(Method.buildMethodNotFoundSignature("public static method not found: " + clazz.getName() + "::", methodName, argValues), location);
+		}
+		if (!methodInfo.isStatic()) {
+			throw new TemplateException(Method.buildMethodNotFoundSignature("Not public static method: " + clazz.getName() + "::", methodName, argValues), location);
+		}
+		
+		try {
+			return methodInfo.invoke(null, argValues);
+		} catch (Exception e) {
+			throw new TemplateException(e.getMessage(), location, e);
+		}
+	}
+}
+
+
+
+